UpHeron
All vulnerabilities

Servers and applications

CVE-2019-20855

An issue was discovered in Mattermost Server before 5.16.1, 5.15.2, 5.14.5, and 5.9.6. It allows attackers to obtain sensitive information (local files) during legacy attachment migration.

Severity
High 7.5
Published
19 Jun 2020
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
5.9.6, 5.14.5, 5.15.2, 5.16.1
Sources
NVD

Affected software

SoftwareAffected versions
MattermostServers and applications · cpe:a:mattermost:mattermost_server
  • Every version before 5.9.6
  • From 5.14.0 before 5.14.5
  • From 5.15.0 before 5.15.2
  • From 5.16.0 before 5.16.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2019-20855
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2019-20855